"Without doubt, the most common weakness of all human beings is the habit of leaving their minds open to the negative influence of other people."

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Source: Napoleon Hill (2012). “Think & Grow Rich”, p.245, Courier Corporation

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Napoleon Hill

Author, Motivational Speaker

Napoleon Hill was an American self-help author known for his influential book 'Think and Grow Rich,' which focuses on the principles of success and personal achievement.

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Napoleon Hill Author, Motivational Speaker

"Self-disciplined begins with the mastery of your thoughts. If you don't control what you think, you can't control what you do. Simply, self-discipline enables you to think first and act afterward."

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